                                                                undo 
Chapter 9 Input Modes

This command will restore the area of the previous interactive raster change to
the way it is on the last stored raster.  It WILL NOT fix changes in attributes
or vector data.  It WILL NOT fix raster changes made by such commands as
del_spurs, etc.  (for these, try re-acquiring the map).  Successive uses of the
undo command will undo successively earlier raster changes up to a limit of 32
previous changes.  Undo will not undo undo as it is already undone.  So there.

undo

    Restore last interactive raster change.
     
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    Options/arguments: 

    None.
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    Example(s):

    To undo the previous line portion drawn (drawn with the 'start' and
    successive use of the continue command). Note this only undoes the effects
    of the last press of the continue key.
     
         undo
     
    To undo the previous 3 uses of the continue key while in separate mode:
     
         undo
         undo
         undo
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    See also:

              recall, acquire
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